I think you are close with your last layout. You may try eliminatintg some of the rocks though this will give you more area for the carpet plant cover and will add depth to your tank.
In the pic below I eliminated rocks "A" & "C" and moved "B" into "C" space and "D" into "A" space.
This one of the fun parts, but make sure you take pics and don't rely on memory.
Good luck


In the pic below I eliminated rocks "A" & "C" and moved "B" into "C" space and "D" into "A" space.
This one of the fun parts, but make sure you take pics and don't rely on memory.
Good luck

